Earth Hour 2015 | WWF
© Earth Hour

Earth Hour

Introduction

WWF’s Earth Hour started in Sydney in 2007 as a citizen action to protest against climate change and a call for urgent action. Earth Hour has since grown at a huge pace to become the world’s largest mass participation environmental initiative, active in over 7,000 cities and 160 countries, and has gone ‘beyond the hour’ to become a platform where people are mobilising action on climate and other environmental priorities.